Hello,
Does anybody happen to have any literature on Rick Ackerman's pivot method? He claims to have corrected the original Trident system concept by Lindsay. If you happen to have anything on this please share. TIA
Cheers
Does anybody happen to have any literature on Rick Ackerman's pivot method? He claims to have corrected the original Trident system concept by Lindsay. If you happen to have anything on this please share. TIA
Cheers
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